directivity

English

Etymology

directive +‎ -ity

Noun

directivity (countable and uncountable, plural directivities)

(physics, electrical engineering) A measure of the performance of an antenna compared to an isotropic antenna; the ratio of the maximum value of radiation intensity to the average radiation intensity.
(geology) Anisotropy in the propagation of earthquake waves in the direction of rupture.
(rare) Directionality
- 1991, COSPAR. Plenary Meeting, Jean-Louis Fellous, COSPAR., Global change and relevant space observations: proceedings of Symposium 1 of the COSPAR twenty-eighth Plenary Meeting held in The Hague, the Netherlands, 25 June-6 July 1990, Pergamon
  For higher degrees, the spatial integration tends to produce a cancellation and a rapid loss of visibility, although less rapidly for velocity measurement than for luminosity measurement, on account of the directivity of the velocity vector.
- 2012, Russell J. Donnelly, Katepalli R. Streenivasan, Flow at Ultra-High Reynolds and Rayleigh Numbers: A Status Report, Springer Science & Business Media →ISBN, page 337
  First we renounced the directivity of the velocity measurement by using a hot point whose size is of order of the wire diameter [4]. Numerical simulations have shown that the probe then measures the velocity modulus [5].
- 2014, Oris, Interaction of Information and Energy as the Primary Cause for origination of the Creative Activity of Self-Consciousness Focus and the Macrocosmos in whole, Ayfaar Foundation Inc. →ISBN
  That is, in order to begin to function synchronously in a new manifestation mode ( to drastically change the vector directivity of the Focus Dynamics), Formo- Creators of billions of particles must “die”:

单词	directivity
释义	directivity English Etymology directive +‎ -ity Noun directivity (countable and uncountable, plural directivities) (physics, electrical engineering) A measure of the performance of an antenna compared to an isotropic antenna; the ratio of the maximum value of radiation intensity to the average radiation intensity. (geology) Anisotropy in the propagation of earthquake waves in the direction of rupture. (rare) Directionality 1991, COSPAR. Plenary Meeting, Jean-Louis Fellous, COSPAR., Global change and relevant space observations: proceedings of Symposium 1 of the COSPAR twenty-eighth Plenary Meeting held in The Hague, the Netherlands, 25 June-6 July 1990, Pergamon For higher degrees, the spatial integration tends to produce a cancellation and a rapid loss of visibility, although less rapidly for velocity measurement than for luminosity measurement, on account of the directivity of the velocity vector. 2012, Russell J. Donnelly, Katepalli R. Streenivasan, Flow at Ultra-High Reynolds and Rayleigh Numbers: A Status Report, Springer Science & Business Media →ISBN, page 337 First we renounced the directivity of the velocity measurement by using a hot point whose size is of order of the wire diameter [4]. Numerical simulations have shown that the probe then measures the velocity modulus [5]. 2014, Oris, Interaction of Information and Energy as the Primary Cause for origination of the Creative Activity of Self-Consciousness Focus and the Macrocosmos in whole, Ayfaar Foundation Inc. →ISBN That is, in order to begin to function synchronously in a new manifestation mode ( to drastically change the vector directivity of the Focus Dynamics), Formo- Creators of billions of particles must “die”:
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